试题 试卷
题型:单选题 题类: 难易度:容易
广西壮族自治区贵港市港南区瓦塘乡中心小学2023-2024学年五年级上学期数学期中考试试卷
0.7×1.2○1.2×0.7
(0.8×0.5)×0.4○0.8×(0.5×0.4)
(2.4+3.6)×0.5○2.4×0.5+3.6×0.5
①0.25×2.8
=0.25×(4×0.7)
=0.25×4×0.7
=1×0.7
=0.7
(应用了{#blank#}1{#/blank#}定律)
②51.25×0.8
=(50+1.25)×0.8
=50×0.8+1.25×0.8
=40+1
=41
(应用了{#blank#}2{#/blank#}定律)
3.1×4×0.25=3.1×(4×0.25)运用了乘法交换律
(2.5+3.7)×□=□×□○□×4
试题篮